نتایج جستجو برای: beach erosion
تعداد نتایج: 38930 فیلتر نتایج به سال:
There is a long history of coastal erosion caused by frequent storm surges in the regions Australia, which imposes great threats to communities and infrastructures alongside beach. Old Bar Beach, New South Wales, one such hotspot famous for its extreme erosion. To apply remedial measures as beach nourishment effectively economically, estimating/reconstructing subsurface hydrogeology over areas ...
A compact commercial Doppler lidar has been deployed in Indianapolis for two years to measure wind profiles and mixing layer properties as part of project to improve greenhouse measurements from large area sources. The lidar uses vertical velocity variance and aerosol structure to measure mixing layer depth. Comparisons with aircraft and the NOAA HRDL lidar generally indicate good performance, ...
This is the second of two papers on the 3D numerical modeling of nearshore hydroand morphodynamics. In Part I, the focus was on surf and swash zone hydrodynamics in the cross-shore and longshore directions. Here, we consider nearshore processes with an emphasis on the effects of oceanic forcing and beach characteristics on sediment transport in the crossand longshore directions, as well as on f...
Populations of the isopod Tylos punctatus were studied at five widely separated beaches between Los Angeles, California, and Punta Banda, Baja California (Mexico). Population densities at these sites were 10 3-10 5 animals per meter of beach frontage; smaller populations were not located, although more than 30 intermediate sites were sampled. Cross-beach distribution appears to be related to sa...
The morphodynamics of an artificial gravel beach in the Bay Rijeka (Ploče Beach) was analyzed. morphological changes face were monitored through intense situation gravitational surface wind waves from incident SSW direction. A numerical modeling technique applied, after initially establishing a model for wave deformation. sediment transport established based on its results. Both models finite v...
The Shinnecock Inlet on the south shore of Long Island, New York, has experienced chronical erosion at down-drift beaches which require periodic nourishment to stabilize local shoreline. potential sand borrow site is selected outside inlet with minimum impact natural bypass process inlet. Supported by US Army Corps Engineers (USACE) District, a numerical sediment transport modeling study presen...
The aim of this study is to analyse the role natural radionuclides 226Ra, 228Ra, 40K and unsupported 210Pb (210Pbex), as erosion accumulation process tracers. For purpose, a complex system, including both characteristic dynamics closed beach those associated with open wave action, was studied. A 3-year monthly variation 210Pbex carried out at Las Canteras beach, on Island Gran Canaria (Spain), ...
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